fix crash when save event

composeApp/src/androidMain/kotlin/su/reya/coop/AndroidExternalSigner.kt

@@ -61,7 +61,7 @@ class AndroidExternalSigner(
     ): String? {
         // Try Content Resolver first
         queryContentResolver(type, payload, pubkey, currentUser)?.let {
-            return it.result
+            return if (resultKey == "event") it.event else it.result
         }
 
         // Fall back to Intent

composeApp/src/androidMain/kotlin/su/reya/coop/ExternalSignerLauncher.kt

@@ -4,23 +4,30 @@ import android.content.Intent
 import androidx.activity.result.ActivityResult
 import androidx.activity.result.ActivityResultLauncher
 import kotlinx.coroutines.CompletableDeferred
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+import kotlinx.coroutines.withContext
 
 class ExternalSignerLauncher {
     private var launcher: ActivityResultLauncher<Intent>? = null
     private var pendingResult: CompletableDeferred<ActivityResult>? = null
+    private val mutex = Mutex()
 
     fun register(launcher: ActivityResultLauncher<Intent>) {
         this.launcher = launcher
     }
 
-    suspend fun launch(intent: Intent): ActivityResult {
-        val deferred = CompletableDeferred<ActivityResult>()
-        pendingResult = deferred
-        launcher?.launch(intent)
-            ?: throw IllegalStateException("ExternalSignerLauncher not registered")
-        return deferred.await()
+    suspend fun launch(intent: Intent): ActivityResult = mutex.withLock {
+        withContext(Dispatchers.Main) {
+            val deferred = CompletableDeferred<ActivityResult>()
+            pendingResult = deferred
+            launcher?.launch(intent) ?: throw IllegalStateException("Signer not registered")
+            deferred.await()
+        }
     }
 
+
     fun onResult(result: ActivityResult) {
         pendingResult?.complete(result)
         pendingResult = null

shared/src/commonMain/kotlin/su/reya/coop/Nostr.kt

@@ -379,9 +379,6 @@ class Nostr {
 
     private suspend fun setCachedRumor(giftId: EventId, rumor: UnsignedEvent) {
         try {
-            val currentUser =
-                signer.currentUser ?: throw IllegalStateException("User not signed in")
-
             // Construct the room id
             val roomId = rumor.roomId()
 
@@ -396,10 +393,10 @@ class Nostr {
             // Set event kind
             val kind = Kind.fromStd(KindStandard.APPLICATION_SPECIFIC_DATA);
 
+            // Construct event
             val event = EventBuilder(kind, rumor.asJson())
                 .tags(tags)
-                .finalizeUnsigned(currentUser)
-                .signAsync(Keys.generate())
+                .finalizeAsync(signer)
 
             client?.database()?.saveEvent(event)
         } catch (e: Exception) {
@@ -412,23 +409,16 @@ class Nostr {
         val cachedRumor = getCachedRumor(event.id())
         if (cachedRumor != null) return cachedRumor
 
-        // Get all signers
-        val signers = listOfNotNull(signer, deviceSigner)
-        if (signers.isEmpty()) return null
-
         // Try to unwrap the gift with each signer
-        for (signer in signers) {
-            try {
-                val gift = UnwrappedGift.fromGiftWrapAsync(signer = signer, giftWrap = event)
-                val rumor = gift.rumor()
-                // Save the rumor to the database
-                setCachedRumor(event.id(), rumor)
-                // Return the rumor
-                return rumor
-            } catch (e: Exception) {
-                println("Failed to unwrap gift: ${e.message}")
-                continue
-            }
+        try {
+            val gift = UnwrappedGift.fromGiftWrapAsync(signer = signer, giftWrap = event)
+            val rumor = gift.rumor()
+            // Save the rumor to the database
+            setCachedRumor(event.id(), rumor)
+            // Return the rumor
+            return rumor
+        } catch (e: Exception) {
+            println("Failed to unwrap gift: ${e.message}")
         }
 
         return null